Solartech SPC Modules
Designed for use in many situations and locations, these solar modules
are an excellent choice for all smaller off-grid solar power
applications. The systems are typically used to charge 12 Volt, 24
volt, or 48 Volt batteries when wired into one, two, or four solar
modules in series. High-quality 12 V solar modules range in size from 5
W to 140 W.

*These systems are not recommended for use in applications greater than
1000 Watts. (Instead use the more economical: Large-format 260 Watt and
300 Watt modules such as REC Solar, JA Solar, and SolarWorld modules.)